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ECCC
2008
107views more  ECCC 2008»
15 years 3 months ago
A Quantum Time-Space Lower Bound for the Counting Hierarchy
We obtain the first nontrivial time-space lower bound for quantum algorithms solving problems related to satisfiability. Our bound applies to MajSAT and MajMajSAT, which are compl...
Dieter van Melkebeek, Thomas Watson
IV
2007
IEEE
91views Visualization» more  IV 2007»
15 years 9 months ago
Explode to Explain - Illustrative Information Visualization
Due to complexity, modern visualization techniques for large data volumes and complex interrelationships are difficult to understand for non-expert users and even for expert user...
Martin Luboschik, Heidrun Schumann
PERCOM
2006
ACM
16 years 2 months ago
Criticality Aware Access Control Model for Pervasive Applications
In this paper we present a new framework for specifying access control policies in smart spaces called Criticality-Aware Access Control (CAAC). The main idea is to automatically r...
Sandeep K. S. Gupta, Tridib Mukherjee, Krishna K. ...
SAINT
2006
IEEE
15 years 9 months ago
A Pervasive Internet Approach to Fine-Grain Power-Aware Computing
We present a novel approach to conserve power in networked mobile devices. Our approach exploits communication within a pervasive smart space as an opportunity to save power as op...
Ahmed Abukmail, Abdelsalam Helal
ICDE
2003
IEEE
98views Database» more  ICDE 2003»
16 years 4 months ago
XPath Query Evaluation: Improving Time and Space Efficiency
Contemporary XPath query engines evaluate queries in time exponential in the sizes of input queries, a fact that has gone unnoticed for a long time. Recently, the first main
Georg Gottlob, Christoph Koch, Reinhard Pichler